Free games like SPACEPLAN
Below are 9 free-to-play Steam games similar to SPACEPLAN, ranked by player overlap and content similarity. No purchase or Steam login required to view the list. Every pick is a full free-to-play title — not a demo, trial, or time-limited giveaway. imho.run's catalogue refreshes daily, so newly free or newly popular titles surface here without manual editing.
Want the full alternatives list (paid + free + Steam Deck + cheaper picks)? See the parent games like SPACEPLAN page.
Ranked picks
- 1
Clicker Heroes
Free-to-play alternative to SPACEPLAN — no purchase or trial window. Shares Adventure and Indie with SPACEPLAN.
Click your way through hordes of monsters, earn gold, and recruit quirky heroes with powerful skills. Progress even while you're idle, and watch the numbers climb into the absurd. It’s a never-ending journey of clicks, crits, and colossal damage.
- 2
AdVenture Capitalist
Free-to-play alternative to SPACEPLAN — no purchase or trial window. Shares Casual and Indie with SPACEPLAN.
Welcome, eager young investor, to AdVenture Capitalist! Arguably the world's greatest Capitalism simulator!
- 3
NGU IDLE
Free-to-play alternative to SPACEPLAN — no purchase or trial window. Shares Adventure and Indie with SPACEPLAN.
NGU Idle is a Free To Play Idle game that's full of weird humor, tons of upgrades and hundreds of hours of content! Try out NGU Idle today and experience the joy of Numbers Going Up!
- 4
Farmer Against Potatoes Idle
Free-to-play alternative to SPACEPLAN — no purchase or trial window. Shares Indie with SPACEPLAN.
Pick up your sword and fight off waves of Potatoes by upgrading your stats constantly, use Equipment, choose between different Classes, put your many Talents to good use, and so much more designed to keep you entertained for a long time.
- 5
Midas Gold Plus - Idle Clicker
Free-to-play alternative to SPACEPLAN — no purchase or trial window. Shares Indie and Casual with SPACEPLAN.
Discover Midas Gold Plus, an engaging idle clicker set in a mythical world! Harness King Midas' golden touch, build a legendary city, and unlock powerful champions. Master unique gameplay styles, explore pet battles, and conquer rival cities. Delve into this ancient tycoon adventure today!
- 6
Chill Corner
Free-to-play alternative to SPACEPLAN — no purchase or trial window. Shares Casual and Indie with SPACEPLAN.
This is just an idle game for chilling, relaxing or focusing.
- 7
Mr.Mine
Free-to-play alternative to SPACEPLAN — no purchase or trial window. Shares Adventure and Casual with SPACEPLAN.
Explore the depths of the earth and uncover hidden treasures in this addictive idle mining game. Unlock the power of your drill with hundreds of upgrades, discover mysterious relics, and unearth priceless gems. Can you master the mines and reveal their deepest secrets? Dive in and dig deep!
- 8
Idling to Rule the Gods
Free-to-play alternative to SPACEPLAN — no purchase or trial window. Shares Indie with SPACEPLAN.
Idling to Rule the Gods is a free to play Idle-Game with a lot of content and some Minigames. Depending on your play-style, you can play it fast or slow. Either way it can be fun for hundreds of hours!
- 9
Unnamed Space Idle
Free-to-play alternative to SPACEPLAN — no purchase or trial window. Shares Casual with SPACEPLAN.
Destroy endless waves of alien ships that have all but wiped out humanity in this long form, unfolding, sci-fi idle game. Customize your ship with different weapons and defenses to defeat specific enemy types and utilize a ton of different systems to increase your overall power.